discover/paths: Add network jobs to queue

[petitboot] / discover / paths.c

diff --git a/discover/paths.c b/discover/paths.c
index e76dc35ecb1038c15b9cd2c6580cc1e454f4c850..3a69488e3e87e44dcd508a4ac4ba650d4c18571a 100644 (file)
--- a/discover/paths.c
+++ b/discover/paths.c
@@ -18,9 +18,20 @@
 
 #include "paths.h"
 #include "device-handler.h"
+#include "sysinfo.h"
 
 #define DEVICE_MOUNT_BASE (LOCAL_STATE_DIR "/petitboot/mnt")
 
+
+struct list    pending_network_jobs;
+
+struct network_job {
+       struct load_task        *task;
+       int                     flags;
+
+       struct list_item        list;
+};
+
 struct load_task {
        struct pb_url           *url;
        struct process          *process;
@@ -437,6 +448,86 @@ static void load_local(struct load_task *task)
        }
 }
 
+static void load_url_async_start_pending(struct load_task *task, int flags)
+{
+       pb_log("Starting pending job for %s\n", task->url->full);
+
+       switch (task->url->scheme) {
+       case pb_url_ftp:
+       case pb_url_http:
+               load_wget(task, flags);
+               break;
+       case pb_url_https:
+               flags |= wget_no_check_certificate;
+               load_wget(task, flags);
+               break;
+       case pb_url_nfs:
+               load_nfs(task);
+               break;
+       case pb_url_sftp:
+               load_sftp(task);
+               break;
+       case pb_url_tftp:
+               load_tftp(task);
+               break;
+       default:
+               /* Shouldn't be a need via this path but.. */
+               load_local(task);
+               break;
+       }
+
+       if (task->result->status == LOAD_ERROR) {
+               pb_log("Pending job failed for %s\n", task->url->full);
+               load_url_result_cleanup_local(task->result);
+               talloc_free(task->result);
+               talloc_free(task);
+       }
+}
+
+void pending_network_jobs_start(void)
+{
+       struct network_job *job, *tmp;
+
+       if (!pending_network_jobs.head.next)
+               return;
+
+       list_for_each_entry_safe(&pending_network_jobs, job, tmp, list) {
+               load_url_async_start_pending(job->task, job->flags);
+               list_remove(&job->list);
+       }
+}
+
+void pending_network_jobs_cancel(void)
+{
+       struct network_job *job, *tmp;
+
+       if (!pending_network_jobs.head.next)
+               return;
+
+       list_for_each_entry_safe(&pending_network_jobs, job, tmp, list)
+               talloc_free(job);
+       list_init(&pending_network_jobs);
+}
+
+static void pending_network_jobs_add(struct load_task *task, int flags)
+{
+       struct network_job *job;
+
+       if (!pending_network_jobs.head.next)
+               list_init(&pending_network_jobs);
+
+       job = talloc(task, struct network_job);
+       if (!job) {
+               pb_log("Failed to allocate space for pending job\n");
+               return;
+       }
+
+       job->task = task;
+       job->flags = flags;
+       list_add_tail(&pending_network_jobs, &job->list);
+}
+
+
 /**
  * load_url - Loads a (possibly) remote URL and returns the local file
  * path.
@@ -487,6 +578,15 @@ struct load_url_result *load_url_async(void *ctx, struct pb_url *url,
                task->process->keep_stdout = true;
        }
 
+       /* If the url is remote but network is not yet available queue up this
+        * load for later */
+       if (!system_info_network_available() && url->scheme != pb_url_file) {
+               pb_log("load task for %s queued pending network\n", url->full);
+               pending_network_jobs_add(task, flags);
+               task->result->status = LOAD_ASYNC;
+               return task->result;
+       }
+
        switch (url->scheme) {
        case pb_url_ftp:
        case pb_url_http: